Method and apparatus of requiring uplink resource and handover in wireless communication system including relay stations

PURPOSE: A method for requiring uplink resource and handover in wireless communication system is provided to reduce overhead by informing a terminal of impossibility for allocating the uplink resources. CONSTITUTION: A method of requiring uplink resource and handover in a wireless communication system includes transmitting request for uplink resource allocation to a relay station, and receiving a message indicating the relay station cannot allocate an uplink resource to the mobile station within a period for which the mobile station waits for a response from the relay station.